Compilare: user.cpp: In function ‘int main()’: user.cpp:7:6: warning: unused variable ‘i’ [-Wunused-variable] int i, *AIB, m, n, op, num, sum, dif, cp, search, max = 1, certain, step, j, sumA, sumB, val, a, b; ^ user.cpp:7:30: warning: unused variable ‘sum’ [-Wunused-variable] int i, *AIB, m, n, op, num, sum, dif, cp, search, max = 1, certain, step, j, sumA, sumB, val, a, b; ^ user.cpp:7:35: warning: unused variable ‘dif’ [-Wunused-variable] int i, *AIB, m, n, op, num, sum, dif, cp, search, max = 1, certain, step, j, sumA, sumB, val, a, b; ^ user.cpp:7:91: warning: unused variable ‘val’ [-Wunused-variable] int i, *AIB, m, n, op, num, sum, dif, cp, search, max = 1, certain, step, j, sumA, sumB, val, a, b; ^ user.cpp:8:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &m, &n); ^ user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &num); ^ user.cpp:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &op); ^ user.cpp:24:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^ user.cpp:31:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^ user.cpp:42:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a); ^